Contact lenses are divided into two main categories: soft and rigid gas permeable.
Toric Contact Lenses
Toric contact lenses are special lenses for people with astigmatism. These lenses are made from the same material as other contact lenses and come in soft or rigid gas permeable forms. Like bifocal lenses, toric lenses have two powers, one for the astigmatism and another for nearsightedness or farsightedness. There is also a mechanism to keep the contact lens relatively stable on the eye when you blink or look around.
Lens Care and Hygiene
Before handling contact lenses, wash and rinse your hands. Use a mild non-cosmetic soap. Soaps containing perfumes, oils or lotions leave a film on the hands, which may be transferred to the lenses and cause eye irritation. Dry hands with a lint-free towel. Fingernails should be short and smooth to avoid damaging the lenses or scratching the eye. Apply cosmetics after inserting and handling contact lenses. Hairspray may leave deposits on the contact lens. Use hairspray before inserting contact lenses. Do not use tap water to clean or soak contact lenses. Tap water contains bacteria that can cause serious eye infections that may lead to blindness. Use lens care products recommended by your eye doctor. Contact lens solutions are designed for single use only in the storing case. Do not use solutions more than one time. Protein-removing enzyme cleaners are useful for rigid gas permeable contact lenses and for daily wear non-disposable soft contact lenses. Replace the contact lens storage case every three months. Rinse the storage case every day with sterile rinsing solution. Let the storage case air dry.
It is important to follow your doctor’s recommendations regarding lens care and hygiene to prevent eye complications due to contact lens wear.